/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

 * @test

 * @bug 8145239 8129559 8080354

 * @summary Tests for EvaluationState.classes

 * @build KullaTesting TestingInputStream ExpectedDiagnostic

 * @run testng ClassesTest

 */

import java.util.ArrayList;

import java.util.List;

import javax.tools.Diagnostic;

import jdk.jshell.Snippet;

import jdk.jshell.TypeDeclSnippet;

import jdk.jshell.VarSnippet;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import jdk.jshell.Diag;

import static java.util.stream.Collectors.toList;

import static jdk.jshell.Snippet.Status.VALID;

import static jdk.jshell.Snippet.Status.RECOVERABLE_NOT_DEFINED;

import static jdk.jshell.Snippet.Status.RECOVERABLE_DEFINED;

import static jdk.jshell.Snippet.Status.DROPPED;

import static jdk.jshell.Snippet.Status.REJECTED;

import static jdk.jshell.Snippet.Status.OVERWRITTEN;

import static jdk.jshell.Snippet.Status.NONEXISTENT;

import static jdk.jshell.Snippet.SubKind.*;

import static org.testng.Assert.assertEquals;

import static org.testng.Assert.assertTrue;

@Test

public class ClassesTest extends KullaTesting {

    public void noClasses() {

        assertNumberOfActiveClasses(0);

    }

    public void testSignature1() {

        TypeDeclSnippet c1 = classKey(assertEval("class A extends B {}", added(RECOVERABLE_NOT_DEFINED)));

        assertTypeDeclSnippet(c1, "A", RECOVERABLE_NOT_DEFINED, CLASS_SUBKIND, 1, 0);

        TypeDeclSnippet c2 = classKey(assertEval("@interface A { Class<B> f() default B.class; }",

                ste(MAIN_SNIPPET, RECOVERABLE_NOT_DEFINED, RECOVERABLE_NOT_DEFINED, false, null),

                ste(c1, RECOVERABLE_NOT_DEFINED, OVERWRITTEN, false, MAIN_SNIPPET)));

        assertTypeDeclSnippet(c2, "A", RECOVERABLE_NOT_DEFINED, ANNOTATION_TYPE_SUBKIND, 1, 0);

        TypeDeclSnippet c3 = classKey(assertEval("enum A {; private A(B b) {} }",

                ste(MAIN_SNIPPET, RECOVERABLE_NOT_DEFINED, RECOVERABLE_NOT_DEFINED, false, null),

                ste(c2, RECOVERABLE_NOT_DEFINED, OVERWRITTEN, false, MAIN_SNIPPET)));

        assertTypeDeclSnippet(c3, "A", RECOVERABLE_NOT_DEFINED, ENUM_SUBKIND, 1, 0);

        TypeDeclSnippet c4 = classKey(assertEval("interface A extends B {}",

                ste(MAIN_SNIPPET, RECOVERABLE_NOT_DEFINED, RECOVERABLE_NOT_DEFINED, false, null),

                ste(c3, RECOVERABLE_NOT_DEFINED, OVERWRITTEN, false, MAIN_SNIPPET)));

        assertTypeDeclSnippet(c4, "A", RECOVERABLE_NOT_DEFINED, INTERFACE_SUBKIND, 1, 0);

        TypeDeclSnippet c5 = classKey(assertEval("class A { void f(B b) {} }",

                ste(MAIN_SNIPPET, RECOVERABLE_NOT_DEFINED, RECOVERABLE_NOT_DEFINED, false, null),

                ste(c4, RECOVERABLE_NOT_DEFINED, OVERWRITTEN, false, MAIN_SNIPPET)));

        assertTypeDeclSnippet(c5, "A", RECOVERABLE_NOT_DEFINED, CLASS_SUBKIND, 1, 0);

    }

    public void testSignature2() {

        TypeDeclSnippet c1 = (TypeDeclSnippet) assertDeclareFail("class A { void f() { return g(); } }", "compiler.err.prob.found.req");

        assertTypeDeclSnippet(c1, "A", REJECTED, CLASS_SUBKIND, 0, 2);

        TypeDeclSnippet c2 = classKey(assertEval("class A { int f() { return g(); } }",

                ste(c1, NONEXISTENT, RECOVERABLE_DEFINED, true, null)));

        assertTypeDeclSnippet(c2, "A", RECOVERABLE_DEFINED, CLASS_SUBKIND, 1, 0);

        assertDrop(c2,

                ste(c2, RECOVERABLE_DEFINED, DROPPED, true, null));

    }

    public void classDeclaration() {

        assertEval("class A { }");

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"));

    }

    public void interfaceDeclaration() {

        assertEval("interface A { }");

        assertClasses(clazz(KullaTesting.ClassType.INTERFACE, "A"));

    }

    public void annotationDeclaration() {

        assertEval("@interface A { }");

        assertClasses(clazz(KullaTesting.ClassType.ANNOTATION, "A"));

    }

    public void enumDeclaration() {

        assertEval("enum A { }");

        assertClasses(clazz(KullaTesting.ClassType.ENUM, "A"));

    }

    public void classesDeclaration() {

        assertEval("interface A { }");

        assertEval("class B implements A { }");

        assertEval("interface C extends A { }");

        assertEval("enum D implements C { }");

        assertEval("@interface E { }");

        assertClasses(

                clazz(KullaTesting.ClassType.INTERFACE, "A"),

                clazz(KullaTesting.ClassType.CLASS, "B"),

                clazz(KullaTesting.ClassType.INTERFACE, "C"),

                clazz(KullaTesting.ClassType.ENUM, "D"),

                clazz(KullaTesting.ClassType.ANNOTATION, "E"));

        assertActiveKeys();

    }

    public void classesRedeclaration1() {

        Snippet a = classKey(assertEval("class A { }"));

        Snippet b = classKey(assertEval("interface B { }"));

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"), clazz(KullaTesting.ClassType.INTERFACE, "B"));

        assertActiveKeys();

        assertEval("interface A { }",

                ste(MAIN_SNIPPET, VALID, VALID, true, null),

                ste(a, VALID, OVERWRITTEN, false, MAIN_SNIPPET));

        assertClasses(clazz(KullaTesting.ClassType.INTERFACE, "A"),

                clazz(KullaTesting.ClassType.INTERFACE, "B"));

        assertActiveKeys();

        assertEval("interface B { } //again",

                ste(MAIN_SNIPPET, VALID, VALID, false, null),

                ste(b, VALID, OVERWRITTEN, false, MAIN_SNIPPET));

        assertClasses(clazz(KullaTesting.ClassType.INTERFACE, "A"),

                clazz(KullaTesting.ClassType.INTERFACE, "B"));

        assertActiveKeys();

    }

    public void classesRedeclaration2() {

        assertEval("class A { }");

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"));

        assertActiveKeys();

        Snippet b = classKey(assertEval("class B extends A { }"));

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"),

                clazz(KullaTesting.ClassType.CLASS, "B"));

        assertActiveKeys();

        Snippet c = classKey(assertEval("class C extends B { }"));

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"),

                clazz(KullaTesting.ClassType.CLASS, "B"), clazz(KullaTesting.ClassType.CLASS, "C"));

        assertActiveKeys();

        assertEval("interface B { }",

                DiagCheck.DIAG_OK,

                DiagCheck.DIAG_ERROR,

                ste(MAIN_SNIPPET, VALID, VALID, true, null),

                ste(b, VALID, OVERWRITTEN, false, MAIN_SNIPPET),

                ste(c, VALID, RECOVERABLE_NOT_DEFINED, true, MAIN_SNIPPET));

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"),

                clazz(KullaTesting.ClassType.INTERFACE, "B"), clazz(KullaTesting.ClassType.CLASS, "C"));

        assertEval("new C();",

                DiagCheck.DIAG_ERROR,

                DiagCheck.DIAG_ERROR,

                added(REJECTED));

        assertActiveKeys();

    }

    //8154496: test3 update: sig change should false

    public void classesRedeclaration3() {

        Snippet a = classKey(assertEval("class A { }"));

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "A"));

        assertActiveKeys();

        Snippet test1 = methodKey(assertEval("A test() { return null; }"));

        Snippet test2 = methodKey(assertEval("void test(A a) { }"));

        Snippet test3 = methodKey(assertEval("void test(int n) {A a;}"));

        assertActiveKeys();

        assertEval("interface A { }",

                ste(MAIN_SNIPPET, VALID, VALID, true, null),

                ste(test1, VALID, VALID, true, MAIN_SNIPPET),

                ste(test2, VALID, VALID, true, MAIN_SNIPPET),

                ste(test3, VALID, VALID, true, MAIN_SNIPPET),

                ste(a, VALID, OVERWRITTEN, false, MAIN_SNIPPET));

        assertClasses(clazz(KullaTesting.ClassType.INTERFACE, "A"));

        assertMethods(method("()A", "test"), method("(A)void", "test"), method("(int)void", "test"));

        assertActiveKeys();

    }

    public void classesCyclic1() {

        Snippet b = classKey(assertEval("class B extends A { }",

                added(RECOVERABLE_NOT_DEFINED)));

        Snippet a = classKey(assertEval("class A extends B { }", DiagCheck.DIAG_IGNORE, DiagCheck.DIAG_IGNORE,

                added(REJECTED)));

        /***

        assertDeclareFail("class A extends B { }", "****",

                added(REJECTED),

                ste(b, RECOVERABLE_NOT_DEFINED, RECOVERABLE_NOT_DEFINED, false, MAIN_SNIPPET));

        ***/

        // It is random which one it shows up in, but cyclic error should be there

        List<Diag> diagsA = getState().diagnostics(a).collect(toList());

        List<Diag> diagsB = getState().diagnostics(b).collect(toList());

        List<Diag> diags;

        if (diagsA.isEmpty()) {

            diags = diagsB;

        } else {

            diags = diagsA;

            assertTrue(diagsB.isEmpty());

        }

        assertEquals(diags.size(), 1, "Expected one error");

        assertEquals(diags.get(0).getCode(), "compiler.err.cyclic.inheritance", "Expected cyclic inheritance error");

        assertActiveKeys();

    }

    public void classesCyclic2() {

        Snippet d = classKey(assertEval("class D extends E { }", added(RECOVERABLE_NOT_DEFINED)));

        assertEval("class E { D d; }",

                added(VALID),

                ste(d, RECOVERABLE_NOT_DEFINED, VALID, true, MAIN_SNIPPET));

        assertActiveKeys();

    }

    public void classesCyclic3() {

        Snippet outer = classKey(assertEval("class Outer { class Inner extends Foo { } }",

                added(RECOVERABLE_NOT_DEFINED)));

        Snippet foo = classKey(assertEval("class Foo { } ",

                added(VALID),

                ste(outer, RECOVERABLE_NOT_DEFINED, VALID, true, MAIN_SNIPPET)));

        assertEval(" class Foo extends Outer { }",

                ste(MAIN_SNIPPET, VALID, VALID, true, null),

                ste(foo, VALID, OVERWRITTEN, false, MAIN_SNIPPET),

                ste(outer, VALID, VALID, true, MAIN_SNIPPET));

        assertActiveKeys();

    }

    public void classesIgnoredModifiers() {

        assertEval("public interface A { }");

        assertDeclareWarn1("static class B implements A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 6, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertDeclareWarn1("final interface C extends A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 5, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertActiveKeys();

    }

    public void classesIgnoredModifiersAnnotation() {

        assertEval("public @interface X { }");

        assertEval("@X public interface A { }");

        assertDeclareWarn1("@X static class B implements A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 9, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertDeclareWarn1("@X final interface C extends A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 8, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertActiveKeys();

    }

    public void classesIgnoredModifiersOtherModifiers() {

        assertEval("strictfp public interface A { }");

        assertDeclareWarn1("strictfp static class B implements A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 15, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertDeclareWarn1("strictfp final interface C extends A { }",

                new ExpectedDiagnostic("jdk.eval.warn.illegal.modifiers", 0, 14, 0, -1, -1, Diagnostic.Kind.WARNING));

        assertActiveKeys();

    }

    public void ignoreModifierSpaceIssue() {

        assertEval("interface I { void f(); } ");

        // there should not be a space between 'I' and '{' to reproduce the failure

        assertEval("class C implements I{ public void f() {}}");

        assertClasses(clazz(KullaTesting.ClassType.CLASS, "C"), clazz(KullaTesting.ClassType.INTERFACE, "I"));

        assertActiveKeys();

    }

    @DataProvider(name = "innerClasses")

    public Object[][] innerClasses() {

        List<Object[]> list = new ArrayList<>();

        for (ClassType outerClassType : ClassType.values()) {

            for (ClassType innerClassType : ClassType.values()) {

                list.add(new Object[]{outerClassType, innerClassType});

            }

        }

        return list.toArray(new Object[list.size()][]);

    }

    @Test(dataProvider = "innerClasses")

    public void innerClasses(ClassType outerClassType, ClassType innerClassType) {

        String source =

                outerClassType + " A {" + (outerClassType == ClassType.ENUM ? ";" : "") +

                innerClassType + " B { }" +

                "}";

        assertEval(source);

        assertNumberOfActiveClasses(1);

        assertActiveKeys();

    }

    public void testInnerClassesCrash() {

        Snippet a = classKey(assertEval("class A { class B extends A {} }"));

        Snippet a2 = classKey(assertEval("class A { interface I1 extends I2 {} interface I2 {} }",

                ste(MAIN_SNIPPET, VALID, VALID, false, null),

                ste(a, VALID, OVERWRITTEN, false, MAIN_SNIPPET)));

        assertEval("class A { A a = new A() {}; }",

                ste(MAIN_SNIPPET, VALID, VALID, true, null),

                ste(a2, VALID, OVERWRITTEN, false, MAIN_SNIPPET));

    }

    public void testInnerClassesCrash1() {

        assertEval("class A { class B extends A {} B getB() { return new B();} }");

        assertEquals(varKey(assertEval("A a = new A();")).name(), "a");

        VarSnippet variableKey = varKey(assertEval("a.getB();"));

        assertEquals(variableKey.typeName(), "A.B");

    }

    public void testInnerClassesCrash2() {

        assertEval("class A { interface I1 extends I2 {} interface I2 {} I1 x; }");

        assertEquals(varKey(assertEval("A a = new A();")).name(), "a");

        VarSnippet variableKey = varKey(assertEval("a.x;"));

        assertEquals(variableKey.typeName(), "A.I1");

    }

}